While properly designed roof systems installed over lightweight structural concrete roof decks have performed successfully, moisture-related complications can be an issue when these roof decks are used as a roof substrate. Higher absorptive properties of aggregates typically used in lightweight structural concrete can result in an elevated
Read more →Introduction The Asphalt Roofing Manufacturers Association (ARMA) recommends that the structural roof deck meet certain minimum requirements to be an acceptable substrate for the specified roofing system. Generally, all decks should be clean, dry, and securely fastened to the building structure with no abrupt level changes exceeding
Read more →Ponding water is defined as water, which remains on a roof 48 hours or longer. It may result from rain, melting snow/ice or runoff from rooftop equipment. The Asphalt Roofing Manufacturers Association is joined by many reputable organizations, such as the National Roofing Contractors Association, the Midwest
Read more →Introduction Application of any type of bituminous roofing system in cold weather can be achieved successfully if precautions are taken. When roof systems are installed in outdoor temperatures below 50°F, the installer can expect difficulties including but not limited to: maintaining the proper asphalt temperature at the
Read more →Built-Up Roofing (BUR) membranes have been in use in North America for more than 100 years. BUR systems predominately consist of alternating layers of asphalt (bitumen) and fiberglass ply felts that create a very durable water resistant membrane. The number of plies within a cross section of
Read more →Asphalt Roofs Can Meet VOC Requirements While volatile organic compound (VOC) regulations have tightened over the years, asphalt roofing products have kept pace. Asphalt roofing products and the coatings and adhesives used in the installation and maintenance of these roof systems continue to provide long-term performance on
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